SOLUTION: Solve the following equations given that: 0 ≤ x < 2π (a) {{{cos^2(x)-sin^2(x)=-1}}} (b) {{{1+sqrt(3)tan(2x)=0}}}

Question 1105130: Solve the following equations given that: 0 ≤ x < 2π
(a)
(b)
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Solve the following equations given that: 0 ≤ x < 2π
(a)
cos(2x) = -1
2x = pi, 3pi
x = pi/2, 3pi/2
=============================
(b)
tan(2x) = -sqrt(3)/3
2x = 5pi/6, 11pi/6, 17pi/6, 23pi/6
x = 5pi/12, 11pi/12, 17pi/12, 23pi/12
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